Bank slope instability monitoring and calculating method based on MQ RBFCM

Abstract

The invention relates to a bank slope instability monitoring and calculating method based on MQ RBFCM. Establishing an ideal homogeneous reservoir bank slope calculation model. The method comprises the steps of adopting an MQ RBFCM discrete saturation-unsaturated seepage control equation and first and second types of boundary conditions; establishing an algebraic equation set simultaneous equationset of the saturated-unsaturated seepage problem, calculating a seepage line in the slope when the reservoir water level change and the rainfall effect do not occur, and then performing steady-stateanalysis to obtain a steady-state seepage field in the slope when the reservoir water level change and the rainfall effect do not occur; taking the steady-state seepage field as an initial state of transient analysis, adding reservoir water level change and rainfall action into boundary conditions, and carrying out transient analysis; and importing the seepage field into an STAB program, arrangingthe safety coefficients at all moments, and carrying out superposition analysis on bank slope pore water pressure distribution and a slope stability calculation result. The method can be used for preventing unburned riverbank stabilization hidden dangers at proper time, has a remarkable effect of maintaining riverbank stabilization, and has a guiding effect on flood control and emergency rescue work of riverways.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to an MQ RBFCM-based monitoring and calculation method for bank instability. Background technique [0002] With the continuous development of my country's water conservancy, the number of reservoirs has increased steadily in the past five years, coupled with the frequent occurrence of extreme weather in recent years, resulting in endless incidents of bank slope instability. The damage forms of reservoir landslides are slightly different from those of natural slopes, mainly in the following three forms: 1. A large number of loose rocks or soil slide into the reservoir, which reduces the effective storage capacity of the reservoir and reduces the benefit of the reservoir; 2. 1. Large-scale landslides that slide into the reservoir at high speed will form surges, which will easily lead to damage such as flooding and dam breaks, endangering hydraulic structures such...

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Problems solved by technology

The damage forms of reservoir landslides are slightly different from those of natural slopes, mainly in the following three forms: 1. A large number of loose rocks or soil slide into the reservoir, which reduces the effective storage capacity of the reservoir and reduces the benefit of the reservoir; 2. 1. Large-scale landslides that slide into the reservoir at high speed will form surges, which will easily lead to damage such as flooding and dam breaks, endangering hydraulic structures such as dams, and even endangering the safety of residents around the reservoir; 3. Larger rock and soil will experience Dams are formed in canyon areas, which in turn cause new submergence hazards or secondary floods, causing damage to downstream houses and other construction facilities, and endangering people's lives and property.

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